Tried my best to figure this one out, I think a short explanation on the submission page would be really helpful! The manual in-game lists off a lot of stuff you can do, but offers very little as to why or for what purpose. I'm not sure what the objective is.
I also had a lot of crashes, hitting R when you first start the game, trying to place more than 2 of those little colored squares, hitting Z with nothing equipped sometimes, and sometimes just randomly when talking around the track. Am willing to give it another shot if you could explain how to play to me?